BHMS

No, you can't get lateral entry admission to MBBS after completing BHMS courses. Both the courses are different from each other though they belongs to same category.
Also note that there is no lateral entry in MBBS.

No, you can't get admission for BHMS, BAMS without competitive exams.

As per Hon Supreme Court of India, all medical admissions will be done through NEET merit list whether MBBS, BHMS, BAMS or BUMS.

There are ample of job opportunities in BAMS. So, go for it.
Good luck.

You can apply for UPSC when you are in the last year of your course. You can apply next year for UPSC. You have to make sure that before interview you must have all the mark-sheet and degree. The candidates who have their results awaited can also apply. You can apply next year for UPSC.

The basic requirement for the eligibility to get the admission to BHMS programme is qualifying the 10+2 examination with 50% marks. The candidate must have physics, chemistry and biology in class 12th. The candidate should have to go through the different national and state level entrance examinations. The candidate should be (minimum) 17 years old. Some states conduct the entrance examinations along with the MBBS and BDS test.
If you are in line with the above eligibility criteria then you can opt for DMLT.

The basic requirement for the eligibility to get the admission to BHMS programme is qualifying the 10+2 examination with 50% marks. The candidate must have physics, chemistry and biology in class 12th. The candidate should have to go through the different national and state level entrance examinations. The candidate should be (minimum) 17 years old. Some states conduct the entrance examinations along with the MBBS and BDS test.
If you are in line with the above eligibility criteria then you can opt for DMLT.